Electric motor



G. w. AMANN, JR.

ELECTRIC MOTOR.

APPLICATION FILED DEC. 21,1917. 1,374,171 Patented Apr. 12, 1921.

f/cil.

ATTORNEY nl. J i w .M 0V 7 7 V wm MM n M 9, im f M A A M 7 0 .0 ,0 4 D0 7 0 4 4 w 1 ..m|.w.m., 4 a 70 n w 6. r/l 5 J. n a. 6 rf 0 WM MW UNITED `STATES' enonenw. MANN. Jn., or mr'rmrmcx. wisconsin.'

- ELECTRIC moron.

To all may concern.'

Be it known that'I GEORGE J r., a citizen of the Uynlted States, residing at Little Black, in the county of Taylor and State of Wisconsin, have inventedcertain new and useful Improvementsin Electric Motors, of which the following is a specification.

Thisinventlon is an electric motor more particularly ada ted for the operation of toys or other evices r uiring la small amount of power, wherein t e motor is provided with suitable reversing means, and is also constructed to convert rectilinear motion into rotary motion.

.One object of the invention .is to provide an electricmotor with oppositely positioned electro-magnets that are slightly offset from each other in a horizontal plane. Another object of thewinvention is to provide the electro-magnets or field magnets.

with armatures that are adapted to be attracted by the polar extremities of the ele'ctro-magnets.

A further object yof the invention is to provide an electric motor with field magnets having armatures adapted to vbe attracted thereby, and connecting'each of the armatures with a rotatably mounted shaft so that the reciprocatory motion is converted into rotary motion.

A still further object of the invention is to provide means for automatically connecting the winding of one set of field magnets to-attract its armature,then breaking the circuit and connecting the winding of the oposite set of field magnets.

ne purpose of the invention is to provide an electric motor with a reversing means so that its application in the running of toys may be more extended and therefore provide for greater utility.4

Broadly stated, the invention comprises a base having mounted at each end a plurality of electro-magnets, the cores of each of the electro-magnets being provided with -a reduced projecting end that is adapted to serve asa ide for the armatures, said armatures being provided with suitable apertures for engaging with said reduced ends, a plurality of spaced pedestal bearings that are adapted to receive and retain av shaft l that is rotatably mounted therein, said shaft being provided with suitable portions serving as crank pins that lie in the same plane, a plurality of spaced contact elements that Specification of Letters Patent.

W. AMAN,

, Patented Apr. 12,1921.

f Application led December A241, 1917. Serial No.'208,282.'

also lie in one plane, which planeis different from that in which the .crank pins lie, a

*pedestal intermediate of the bearings that is adapted-to rotatably mount suitable curved members serving as contacts, said contacts being adapted to be alternately engaged byV the contacts carried by the crank shaft, said contactsbeing further provided with insulation, and means to rotate said curved contacts so that thedirection of rotation of the crank shaft may be changed, said crank shaft' being provided with a fiy wheel of suificlent weight,'and a pulley for driving purposes, the clrcuiting arrangement for the electro-magnets beingone that provides for alternately conne'cting the field magnets and v1f deslred employing the base as one portion l of the circuit.

,v One practical form yof construction and assembly. will be described and illustrated 1n the accompanying drawings, in which Figure l isa top plan view of the-assembled motor,

Fig. 2 is a side elevation of the assembled motor wlth parts broken away to show more clearly the contacts and the manner of .reversing and completing the circuit, and

Fig. 3 is a diagrammatic viewl showing the circuiting. arrangement.

In the preferred embodiment about tobe described, a base 5 may be formed of any cated at 6, so that its ends are offset vfrom v lts longltudlnal axis. vAt each end of theA base it is provided with upstanding ends 7 and8 that serve as supports for the electromagnets generally indlcated at A and B.

The electro-magnets A and B may be of the usual type of construction that includes two cores indicated at 9 and 10. These cores 9 and l10 are adapted to be held in position upon the end 7 in any usuall or customary mannersuch as the bolts -11 and 12. The ends at this time serve as yokes. The electro-magnets A and B which constitute the field magnets are preferably positioned in the same horizontal plane. .The cores 9 and 10 may be provided with a suitable winding that is maintained in position between the heads 13 and 14. The winding upon each one of the cores 9 and 10 is provided with terminals, two of which are connected `together in the usual manner,

One terminal of the winding upon the core 10 is connected with an insulated binding post 15 that serves as a linel terminal.

The other terminal of the winding wound upon the core 10 is connected w1th a termlnalof the winding wound upon the core 9 as indicated at 16. The other terminal of this winding indicated at 17 has connected to it a conductor 18 that passes to and is connected with a device that will. be more fully described hereafter. As shown .in Fig. 2 the binding post 15 connects with the winding upon the core 10 by means of the jum er 19. Upon the opposite side. of the end there is mounted another binding post 20 that serves as thebther llne terminal. As shown this terminal 1s mounted upon the end 7. The end 8 also mounted upon it a pair of 'cores indlcated at 21 and 22 that may be secured upon the end by any suitable means as indicated by the bo ts 23 and 24.

These cores have. mounted thereon the heads indicated at 25 and 26 and'between these heads is a winding. The windlng upon the core 22 has one terminal connected with a conductor indicated at 27 that 1s connected with the binding post 15. The other end Aof the conductor 29.

Each of the cores 9, 10, 21, and 22 are provided with the pins or guides 30 as shown and with a copper shield or late. These pins are preferably inserted w1th a drivin fit into suitable holes formed 1n the en s of the cores. of sufficient length to project outward beyond the limit of motion of the armature and are formed for the purpose of prov1d` ing guides for the armatures 31 and 32. These armatures 31 and 32 are. preferabl formed of magnetic material such as soft iron .and are adapted to coperate with the cores of theelectro-magnets A and B. For this purpose they are provided with suitable holes through which pass the guides or stems 30.

The plates 31 and 32 are provided with suitable holes to provide for rivetin ends of the connecting rods 35 `and 36 t ereto, the heads of the rivets beingI shown at 33 and 34. A

Upon opposite sides of the enlarged portion 6 of the base 5 there are mounted the bearing pedestals 40 and 41. The 'shaft-39' is adapted to extend through suitable bearings formed in the lupper ends of these pedestals. The` shaft in projecting exteriorly of the pedestals may be provided with suitable means for preventing excessive axial movement such as the collars 42 which,

The pins should be the A may be secured thereon in any suitable manner.

The crankshaft 39 isv provided at sultable points with the cranked portions having the crank pins 37 and 38. These pms lie preferably in the same plane or in other words the two cranked portions lie in the same plane. As shown the crank pins 37 and 38 are spaced from each other.

At suitable spaced intervals the shaft 39 is provided with the proections indicated at 43 and 44, which are a apted to serve as contacts. At a suitable polnt on the base there arises another pedestal indicated at 45 which has its upper end curved as indicated at 46 so that the end lies over the crank shaft but is spaced therefrom.

The pedestal 45 has at its upper end a lever 47 which is eccentrically mounted, the point of pivoting being indicated at 48. The curved end 46 is provided kwith a stop 49 that limits the movement of this lever 47 in one direction. This lever 47 is also rovided with a handle indicated at 50. his lever 47 has mounted thereon a yoke or U- shaped member the limbs of which are formed vof resilient material. rlhis yoke which may be indicated at 51 is preferably insulated from-its point of securement on the lever 47.

The yoke member 51 serving as a contact is adapted to be intermittently engaged b the contact 43 mounted upon the crank sha 39. `The conductor 29 is suitably connected with the yoke member 51. The pedestal 41 may have mounted thereon the lever 52, whlch lever is provided with a handle 53. The lever 52 is preferably eccentrically mounted upon the pivotal point or pin 54. As sho-wn in Fig. 2 this pin 54 is surrounded by an insulating block 55. Mounted upon 52 are adapted to shift the yokes 51 and 56 so as to cause them to be alternately engaged by means of the contacts 43 and 44 of the crank shaft 39. As shown in the diagram the yoke 51 is so .positioned that the contact 43 is engaging therewith, and the contact 44 is not engaging with the yoke 56. A continued movement of the crank shaft 39 will cause the contact 43 to disenga e itself from the yoke 51 thus breakin t e circuit to the conductor 29 and shortly t ereafter the contact 43 engages with the yoke 56 completingthe circuit tothe conductor 18. The diagram Fig. 3 shows more clearl how these yokes are positioned and ind-.1-

cates that they are not in axial alinement provided with suiti ductors as shown more particularly in Fig. 2. As one end of the line wire is connected with the insulated terminal 15 and the other wire is connected with the terminal 20 the base, bearing pedestals, and the crank shaft constitute the other side of the circuit.

In order to provide for a better turning movement and to continue the rotative effort a fly wheel 57 is employed. This y wheel ,should have a rim of Suflicient weight to continue movement through the energy stored in its rim. The iy wheel may also be provided with a driving pulley indicated at 58. The pulley 58 if desired may be sep,- arately secured upon the driving shaft 39 by means of suitable fastening means such asv shown' by the set screw 59.

What is claimed is In an electric motor the combination of two pairs of electro-magnets being in the same plane and out of alinement with one another, movable armatures adapted to be acted on by said electro-magnets, a crank shaft rotatably mounted in the same plane with and between said pairs of electro-magnets and provided with spaced contacts llying in the same plane, a lever provided with a yoke adapted to overlie and to be ntermittently engaged by one of the spaced contacts on the shaft, a second lever provided with a yoke adapted to be intermittently engaged by the other spaced contact on the shaft, means connecting the armatures with the shaft to impart a rotary movement thereto when said armatures are moved, and circuits including the electro-magnets, said circuits provided with terminals.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE W. AMANN, JR. Witnesses:

HERMAN LEICHT, EMILIE GILSE. 

